Mobile cnc machining machine

Abstract

Provided is a mobile CNC machining machine which is designed to machine a rotor of a turbomachine, wherein the turbomachine is a rotor of a steam turbine, including an x-axis, a y-axis and a z-axis which are arranged perpendicular to one another, a baseplate, a stator which is arranged on the baseplate and is movable relative to the baseplate along the x-axis, and a tool module which is held on the stator and is movable along the y-axis and along the z-axis and is designed to accommodate a machining tool wherein, guided along a circular-arc-shaped convex guide disposed on the stator, the tool module is movable about a c-axis which extends parallel to the x-axis; in that the z-axis intersects the c-axis; and in that the y-axis extends tangentially to a circular path, of which the c-axis is the center point.

1 . A mobile CNC machine tool designed to machine a rotor of a continuous-flow machine, wherein the continuous flow machine is a rotor of a steam turbine, comprising an X axis, a Y axis, and a Z axis which are each arranged at right angles to one another, a bottom plate, a stand arranged on the bottom plate and capable of being displaced relative to the latter along the X axis, and a tool module which is held on the stand so that it can be displaced along the Y axis and along the Z axis and is designed for receiving a machining tool, wherein the tool module is guided on a convex guide in the shape of an arc of a circle arranged on the stand, and can be displaced about a C axis which extends parallel to the X axis, in that the Z axis intersects the C axis, and in that the Y axis extends tangentially to a circular path which has the C axis as a center point. 
     
     
         2 . The CNC machine tool as claimed in  claim 1 , wherein the bottom plate has a plurality of leveling devices which are designed for orienting the bottom plate relative to a subsurface. 
     
     
         3 . The CNC machine tool as claimed in  claim 1 , wherein a baseplate is fastened removably to the bottom plate using screws and centering pins, the baseplate being provided on its upper surface with linear guides for the displacement of the stand along the X axis. 
     
     
         4 . The CNC machine tool as claimed in  claim 3 , wherein an intermediate plate on which the stand is fastened is guided on the linear guides, wherein the intermediate plate is fastened removably in particular using fastening screws and centering pins. 
     
     
         5 . The CNC machine tool as claimed in  claim 4 , wherein a working platform, having an integrated switch cabinet, is fastened on the intermediate plate. 
     
     
         6 . The CNC machine tool as claimed  claim 1 , wherein the tool module can be displaced along the convex guide in the shape of an arc of a circle which is arranged on the stand, by a defined angle about the C axis. 
     
     
         7 . The CNC machine tool as claimed in  claim 1 , wherein the tool module can be locked steplessly in the different angular positions. 
     
     
         8 . The CNC machine tool as claimed in  claim 1 , wherein the tool module is a milling module which is designed to drive a milling tool in rotation about the Z axis. 
     
     
         9 . A method for mechanically machining a rotor of a continuous-flow machine using a CNC machine tool as claimed in  claim 1 , which has the steps: a) jacking the rotor to be machined up on support blocks; b) constructing the CNC machine tool next to the jacked-up rotor in such a way that the X axis of the CNC machine tool extends parallel to the longitudinal axis of the rotor, and that the C axis of the CNC machine tool coincides with the longitudinal axis of the rotor; c) machining a first peripheral part region of the rotor using the CNC machine tool; d) rotating the rotor about its longitudinal axis by a predetermined angle; e) machining a further peripheral part region of the rotor using the CNC machine tool; and f) repeating steps d) and e) until the whole peripheral region of the rotor has been machined.